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    https://en.wikipedia.org › wiki › Photoresist

    Photoresist - Wikipedia

    Simple resist polarity

    Positive: light will weaken the resist, and create a hole
    Negative: light will toughen the resist and create an etch resistant mask.
    To explain this in graphical form you may have a gra… See more

    Classification

    Based on the chemical structure of photoresists, they can be classified into three types: photopolymeric, photodecomposing, and photocrosslinking photoresist.
    • … See more

    Light sources

    In lithography, decreasing the wavelength of light source is the most efficient way to achieve higher resolution. Photoresists are most commonly used at wavelengths in the ultraviolet spectrum or shorter (<400 nm). For example, … See more

    What are photoresists made of?
    Photoresists are constructed from complex hydrocarbon chains known as polymers. Polymers are chains of smaller molecules known as monomers. Polymers are the basis of LCD displays, plastic tubing like PVC, acrylic, simulated leather. Polymers have the ability to form long chains with many branches as shown in Figure 8-3.
    alan.ece.gatech.edu
    Wikipedia text under CC-BY-SA license
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